Use the simd types where I can

MetaballsKit/Geometry.swift

@@ -7,91 +7,18 @@
 //
 
 import Foundation
+import simd
 
-public struct Point {
-    var x: Float
-    var y: Float
-
-    var CGPoint: CGPoint {
-        return CoreGraphics.CGPoint(x: CGFloat(x), y: CGFloat(y))
-    }
-
-    init() {
-        self.init(x: 0, y: 0)
-    }
-
-    init(x: Float, y: Float) {
-        self.x = x
-        self.y = y
-    }
-}
-
-extension Point: CustomStringConvertible {
-    public var description: String {
-        return "(\(x), \(y))"
-    }
-}
-
-public struct Size {
-    var width: UInt16
-    var height: UInt16
-
-    public init() {
-        self.init(width: 0, height: 0)
-    }
-
-    public init(width: UInt16, height: UInt16) {
-        self.width = width
-        self.height = height
-    }
+public typealias Size = packed_uint2
 
+extension Size {
     public init(size: CGSize) {
-        self.init(width: UInt16(size.width), height: UInt16(size.height))
+        self.init(UInt32(size.width), UInt32(size.height))
     }
 }
 
 extension Size: CustomStringConvertible {
     public var description: String {
-        return "(\(width), \(height))"
-    }
-}
-
-extension Size: Equatable {
-    /// Returns a Boolean value indicating whether two values are equal.
-    ///
-    /// Equality is the inverse of inequality. For any values `a` and `b`,
-    /// `a == b` implies that `a != b` is `false`.
-    ///
-    /// - Parameters:
-    ///   - lhs: A value to compare.
-    ///   - rhs: Another value to compare.
-    public static func ==(lhs: Size, rhs: Size) -> Bool {
-        return lhs.width == rhs.width && lhs.height == rhs.height
-    }
-}
-
-extension CGSize {
-    init(size: Size) {
-        self.init(width: CGFloat(size.width), height: CGFloat(size.height))
-    }
-}
-
-public struct Vector {
-    var dx: Float
-    var dy: Float
-
-    init() {
-        self.init(dx: 0, dy: 0)
-    }
-
-    init(dx: Float, dy: Float) {
-        self.dx = dx
-        self.dy = dy
-    }
-}
-
-extension Vector: CustomStringConvertible {
-    public var description: String {
-        return "(\(dx), \(dy))"
+        return "(\(x), \(y))"
     }
 }